引入pom：

<dependency>
    <groupId>com.aliyun</groupId>
    <artifactId>dingtalk</artifactId>
    <version>1.1.64</version>
</dependency>

<dependency>
    <groupId>com.aliyun</groupId>
    <artifactId>alibaba-dingtalk-service-sdk</artifactId>
    <version>1.0.1</version>
</dependency>

提供工具類：

@Slf4j
@Component
public class DingtalkUtils {

    /**
     * 使用 Token 初始化賬號Client
     *
     * @return Client
     * @throws Exception
     */
    public static com.aliyun.dingtalkoauth2_1_0.Client createAuthClient() throws Exception {
        Config config = new Config();
        config.protocol 
 
= "https";
        config.regionId = "central";
        return new com.aliyun.dingtalkoauth2_1_0.Client(config);
    }

    public static GetAccessTokenResponse getAccessToken(String appKey, String appSecret) throws Exception {
        com.aliyun.dingtalkoauth2_1_0.Client client = createAuthClient();
        GetAccessTokenRequest getAccessTokenRequest 
 
= new GetAccessTokenRequest()
                .setAppKey(appKey)
                .setAppSecret(appSecret);
        GetAccessTokenResponse accessTokenResponse = null;
        try {
            accessTokenResponse = client.getAccessToken(getAccessTokenRequest);
        } catch (TeaException err) {
            if (!Common.empty(err.code) && !Common.empty(err.message)) {
                // err 中含有 code 和 message 屬性，可幫助開發定位問題
                log.error("獲取釘釘accessToken異常 code：{} ， message ：{}", err.code, err.message);
            }
        } catch (Exception _err) {
            TeaException err = new TeaException(_err.getMessage(), _err);
            if (!Common.empty(err.code) && !Common.empty(err.message)) {
                // err 中含有 code 和 message 屬性，可幫助開發定位問題
                log.error("獲取釘釘accessToken異常 code：{} ， message ：{}", err.code, err.message);
            }
        }
        return accessTokenResponse;
    }

    /**
     * 根據userid獲取使用者詳情
     *
     * @param userId
     * @param accessToken
     * @return
     * @throws Exception
     */
    public static String getUserIndoByUserId(String userId, String accessToken) throws Exception {
        DingTalkClient client = new DefaultDingTalkClient("https://oapi.dingtalk.com/topapi/v2/user/get");
        OapiV2UserGetRequest req = new OapiV2UserGetRequest();
        req.setUserid(userId);
        OapiV2UserGetResponse rsp = client.execute(req, accessToken);
        return rsp.getResult().getUnionid();
    }

    /**
     * 傳送訊息
     **/
    public static void messageCorpConversationAsyncSend(OapiMessageCorpconversationAsyncsendV2Request req, String accessToken) {
        DingTalkClient client = new DefaultDingTalkClient("https://oapi.dingtalk.com/topapi/message/corpconversation/asyncsend_v2");
        try {
            client.execute(req, accessToken);
        } catch (TeaException err) {
            if (!Common.empty(err.code) && !Common.empty(err.message)) {
                // err 中含有 code 和 message 屬性，可幫助開發定位問題
                log.error("傳送釘釘通知訊息異常 code：{} ， message ：{}", err.code, err.message);
            }
        } catch (Exception _err) {
            TeaException err = new TeaException(_err.getMessage(), _err);
            if (!Common.empty(err.code) && !Common.empty(err.message)) {
                // err 中含有 code 和 message 屬性，可幫助開發定位問題
                log.error("傳送釘釘通知訊息異常 code：{} ， message ：{}", err.code, err.message);
            }
        }
    }
}

傳送訊息的實現類：

/**
 * @ClassName: 釘釘訊息通知實現類
 * @Description: 釘釘訊息通知實現類
 **/
@Service
public class ParkingDingTalkServiceImpl implements ParkingDingTalkService {


private static String APP_KEY = "you appkey"; //你的appkey
    private static String APP_SECRET = ""; //你的appsecret
    private static Long AGENT_ID = 1221;

    @Autowired
    private StringRedisTemplate redisTemplate;/**
     * @param userIds 接收人的userid
     * @param msg 訊息體
     * @Exception 異常
     * 傳送釘釘訊息
     */
    @Override
    public void sendDingTalkMessage(String userIds,OapiMessageCorpconversationAsyncsendV2Request.Msg msg) throws Exception {
        String accessToken = getAccessToken();
        OapiMessageCorpconversationAsyncsendV2Request request = new OapiMessageCorpconversationAsyncsendV2Request();
        request.setAgentId(AGENT_ID);
        request.setUseridList(userIds);
        request.setMsg(msg);
        DingtalkUtils.messageCorpConversationAsyncSend(request, accessToken);
    }


    /**
     * 獲取getAccessToken
     *
     * @return
     * @throws Exception
     */
    private String getAccessToken() throws Exception {
        String accessToken = redisTemplate.opsForValue().get(Constants.SMP_DINGTALK_ACCESS_TOKEN);
        if (StringUtils.isNotEmpty(accessToken)) {
            return accessToken;
        }
        GetAccessTokenResponse accessTokenRes = DingtalkUtils.getAccessToken(APP_KEY, APP_SECRET);
        accessToken = accessTokenRes.getBody().getAccessToken();
        Long expireIn = accessTokenRes.getBody().getExpireIn();
        redisTemplate.opsForValue().set(Constants.SMP_DINGTALK_ACCESS_TOKEN, accessToken, expireIn, TimeUnit.SECONDS);
        return accessToken;
    }
}

提供service：

public interface ParkingDingTalkService {

    /**
     * 傳送釘釘訊息
     * @param userIds  使用者ids，多個使用者用','分割
     * @param msg 訊息體
     * @throws  Exception 丟擲異常正常執行
     */
    public void sendDingTalkMessage(String userIds, OapiMessageCorpconversationAsyncsendV2Request.Msg msg) throws Exception;

}

直接呼叫sevice方法就可以使用了！